Kenwood TM 733 Manual

The Kenwood TM 733 is a dual-band VHF/UHF amateur radio transceiver featuring 2-meter (144-148MHz) and 70cm (430-450MHz) operation, 50W output on VHF and 35W on UHF, 200 memory channels, cross-band repeat function, CTCSS/DCS encode/decode, wide receiver coverage, detachable front panel, and multiple scanning modes. Below are key sections for features, installation, operation, programming, and troubleshooting.

Features at a Glance

Key components: Main transceiver unit, detachable front panel, microphone, DC power cable, mounting brackets.

Feature	Description
Frequency Coverage	VHF: 144-148MHz, UHF: 430-450MHz
Output Power	VHF: 50W/5W, UHF: 35W/5W (High/Low)
Memory Channels	200 channels (100 per band)
Cross-band Repeat	Full duplex cross-band repeating
CTCSS/DCS	Encode and decode capabilities
Receiver Coverage	Wideband receive capability
Scanning Modes	Program, memory, band scan
Power Requirements	13.8V DC negative ground
Antenna Connectors	SO-239 for VHF, N-type for UHF
Front Panel	Detachable for remote operation

Installation

Unpack and inspect contents. Choose suitable mounting location.

1. Connect power: Red wire to positive (+), black wire to negative (-) of 13.8V DC source.
2. Install antennas: Connect VHF antenna to SO-239, UHF antenna to N-type connector.
3. Mount transceiver: Use provided brackets for secure mounting.
4. Connect microphone: Plug into MIC jack on front panel.
5. Attach front panel: Connect control cable if using remote mount.

WARNING! Ensure proper polarity when connecting power. Use appropriate fusing.

First-Time Setup

Power on transceiver; initialize settings.

1. Set operating frequency: Use VFO dial or keypad to enter desired frequency.
2. Select power level: Choose HIGH (50W/35W) or LOW (5W) as needed.
3. Program CTCSS/DCS: Access TONE menu to set encode/decode tones.
4. Configure scan settings: Set scan resume conditions and priority channels.
5. Test transmission: Ensure proper operation on local repeater.

CAUTION! Verify antenna connections before transmitting.

Specifications

• Frequency Range: VHF 144-148MHz, UHF 430-450MHz
• Output Power: VHF: 50W/5W, UHF: 35W/5W
• Memory Channels: 200 total (100 per band)
• Modulation: 16K0F3E (FM)
• Power Supply: 13.8V DC ±15%
• Current Drain: Receive: 0.8A, Transmit: 12A max
• Dimensions: Main unit: 140W × 45H × 190D mm
• Weight: 1.8 kg (main unit only)
• Operating Temp: -10°C to +60°C

Controls and Functions

Front Panel: POWER, VOLUME, SQUELCH, VFO/MR, A/B band select, FUNCTION key.

Microphone: PTT, UP/DOWN buttons, 16-key keypad, MONI monitor.

Main Functions: Dual-band simultaneous receive, cross-band repeat, memory channel operation, CTCSS/DCS encode/decode, various scanning modes, tone burst, DTMF encoding, power level selection, offset direction, repeater shift.

Memory Programming

Store frequencies and settings in memory channels.

1. Select frequency: Use VFO to tune to desired frequency.
2. Set parameters: Configure tone, offset, power level as needed.
3. Store memory: Press F + MR, select memory channel (0-199).
4. Verify storage: Switch to MR mode and select channel to verify.
5. Edit memory: Use same procedure to overwrite existing memories.

Tip: Use memory names for easy identification of stored frequencies.

Cross-Band Operation

Full duplex cross-band repeating capability.

1. Enable cross-band: Access menu and enable cross-band function.
2. Set bands: Designate one band as receive, other as transmit.
3. Configure offsets: Set appropriate frequency offsets for both bands.
4. Test operation: Verify proper repeating function.
5. Monitor activity: Use monitor function to check both bands.

WARNING! Ensure compliance with local regulations when using cross-band repeat.

Scanning Features

Multiple scanning modes for efficient frequency monitoring.

1. Memory Scan: Scans all programmed memory channels.
2. Program Scan: Scans user-defined group of memory channels.
3. Band Scan: Scans entire VHF or UHF amateur band.
4. Priority Scan: Monitors priority channel while scanning.
5. Set scan resume: Time or carrier operated modes available.

Tip: Use lock-out function to skip unwanted frequencies during scan.

Maintenance

Regular maintenance ensures optimal performance.

Clean exterior with dry cloth only. Check antenna connections periodically. Verify power connections remain secure. Keep ventilation openings clear.

CAUTION! Do not use chemicals or liquids for cleaning. Disconnect power before maintenance.

Regulatory Information

FCC Part 97: Certified for amateur radio service. This device complies with Part 15 of FCC Rules. Operation subject to condition that device does not cause harmful interference. For amateur use only - operator must possess valid amateur radio license. Copyright © Kenwood Corporation. For support, contact authorized Kenwood service center.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power connection	Check DC power connections; verify 13.8V supply; check fuse.
No transmit	Settings/connections	Verify PTT operation; check microphone connection; confirm frequency selection.
Poor reception	Antenna/tuning	Check antenna connections; verify SWR; ensure proper tuning.
Memory lost	Backup battery	Replace internal backup battery; reprogram memories.
Cross-band not working	Settings	Verify cross-band enabled; check frequency assignments; confirm offsets.

Reset: Power off/on for soft reset. Full reset via internal procedure.

Service: Contact authorized Kenwood service center for repairs.